<span> RNA polymerase is commonly know as DNA-dependent RNA polymerase. It catalyzes the transcription of DNA to synthesize precursors of mRNA and most snRNA and microRNA. It is found in the core of eukaryotic cells. One of which combined rRNA in the nucleolus while the rest of the chemical blends other RNA in the nucleoplasm, some portion of the core yet outside the nucleolus.</span>
They break down organic matter into nutrients for other organisms.
<h3><u>What is the role of decomposers in ecosystem?</u></h3>
Saprophytes like fungus and bacteria are decomposers. They rely entirely on the dead and decomposing organic debris to survive. Decomposers are crucial to the ecology because they assist in recycling nutrients so that plants may utilise them again.
The function of a decomposer in the ecosystem is as follows:
- By disintegrating dead plants and animals, they first serve as a purifying force for the environment.
- They aid in the nutrient recycling.
- By allowing the dead to decay, they provide room in the biosphere for new life.
- For the benefit of reuse by producers like crop plants, they assist in reintroducing the various elements to water, soil, and air.
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The lake's pH has become acidic; in 1989, it was 6.7; by 1996, it had dropped to 5.1. This shows that the increase in the acidity which has several bad impacts on the lake water ecosystem and its community.
<h3>What happens when the freshwater becomes acidic?</h3>
The freshwater ecosystem differs from the oceanic saltwater ecosystem in that freshwater contains phytoplankton, edible fish, and so on. The fresh water has a normal pH, but the pH decreases and induces acidity when the water is polluted with different chemicals, such as nitrogen oxide, sulfur dioxide, etc.
When acid rain happens due to man-made pollution, this further adds acidity to the fresh water, and as a result, the species that live in the lake are not able to live and breathe properly due to a lack of oxygen. The acidity in the table increased year after year from 1989 to 1996.
Hence, the acidity of the lake increased and the pH decreased in these years, from 1989 to 1996.
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<u>The equation that shows the decomposition of silver carbonate are;</u>
2Ag2CO3 ---------> 4Ag + 2CO2 + O2
<u>From the periodic table:</u>
Mass of silver = 107.8682 grams
Mass of carbon = 12 grams
Mass of oxygen = 16 grams
Molar mass of Ag2CO3 = 2(107.8682) + 12 + 3(16) = 275.7364 grams
<u>From the balanced equation above:</u>
2(275.7362) = 551.4728 grams<em> of</em> Ag2CO3 <em>produces</em> 4(107.8682) = 431.4728 <em>grams of Ag</em>
<u>Thus, in order to know the mass of Ag produced from 2.76 grams of Ag2CO3, we'll use the cross multiplication method; </u>
Mass of Ag produced = (2.76 × 431.4728) / (551.4728) = <em>2.16 grams</em>
Based on the calculations demonstrated above, the law of conservation of mass is applied.
<span>The answers are: mitochondria, lysosome, endoplasmic reticulum</span>
